Abstract
The strength of adhesive shaft joints between carbon-fiber-reinforced plastics (CFRP) and stainless steel bonded with epoxy resin was investigated in room temperature and low temperature (-70°C) both analytically and experimentally. The distributions of stress for tensile load and thermal stress for cooling in the joint were analyzed by applying the elastic finite-element method. The strength of the joints was predicted by applying the strength law of CFRP, stainless steel, adhesive layer and their interfaces to the calculated stress distributions. The predicted strength was compared with the experimental strength of the joints. The effects of the overlapped length and diameter ratio on the joint strength were examined at both conditions of room and low temperatures. The joint strength for the initial failure is saturated by a certain overlapped length, but the strength decreases with increasing diameter ratio. The final joint strength in low temperature is larger than that in room temperature.
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